NAMM '18 - Schertler Roy Demo Jason ShadrickFebruary 16, 2018VideoThe latest acoustic combo from the Swiss builders packs an impressive 400 watts into seven channels.namm-2018whats-newvideosgear-show-demoacoustic-ampsschertlerampsspecial-featured-storiesacousticgearAmpsGearAcoustic GuitarsNAMMVideosReviewsAcoustic